I want to have push message functionality for a libgdx game so I was thinking about using Google Firebase Cloud Messaging Api. Problem is I don't know any iOS so I want Java client on iOS end. Is there such a client? Or is there some better alternative than using FCM if I just want to be able to send messages from a server to libgdx cross-platform Java game?
I don't need to be able to receive messages when game isn't active, i.e. in the background.